scale_menu

menu_win(3X)							 menu_win(3X)



NAME
       menu_win - make and break menu window and subwindow associations

SYNOPSIS
       #include <menu.h>
       int set_menu_win(MENU *menu, WINDOW *win);
       WINDOW *menu_win(const MENU *menu);
       int set_menu_sub(MENU *menu, WINDOW *sub);
       WINDOW *menu_sub(const MENU *menu);
       int scale_menu(const MENU *menu, int *rows, int *columns);

DESCRIPTION
       Every  menu has an associated pair of curses windows.  The menu window
       displays any title and border associated with  the  window;  the	 menu
       subwindow  displays the items of the menu that are currently available
       for selection.

       The first four functions get and set those windows.  It is not  neces-
       sary to set either window; by default, the driver code uses stdscr for
       both.

       In the set_ functions, window argument of NULL is treated as though it
       were  stsdcr.   A  menu	argument  of  NULL is treated as a request to
       change the system default menu window or subwindow.

       The function scale_menu returns the minimum size required for the sub-
       window of menu.

RETURN VALUE
       Routines	 that  return  pointers	 return NULL on error.	Routines that
       return an integer return one of the following error codes:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
	    System error occurred (see errno).

       E_BAD_ARGUMENT
	    Routine detected an incorrect or out-of-range argument.

       E_POSTED
	    The menu has already been posted.

       E_NOT_CONNECTED
	    No items are connected to the menu.

SEE ALSO
       curses(3X), menu(3X).

NOTES
       The header  file	 <menu.h>  automatically  includes  the	 header	 file
       <curses.h>.

PORTABILITY
       These  routines emulate the System V menu library.  They were not sup-
       ported on Version 7 or BSD versions.

AUTHORS
       Juergen Pfeifer.	 Manual pages and adaptation for new curses  by	 Eric
       S. Raymond.



								 menu_win(3X)